Stone-sawing machine.



E. EGGERS.

STONE SAWING MACHINE.

7 APPLICATION FILED MAY 14, 1910. 1,01 7,207, Patented Feb. 13, 1912.

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Attorneys E. EGGERS.

STONE SAWING MACHINE.

APPLICATION FILED MAY 14, 1910.

Patented Feb. 13,1912. 7

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Wi nesses GOLUMEIA PLANOQRAPH. cm, WASHINGTON, n. c.

, E. EGGERS.

- STONE SAWING MACHINE.

APPLIOATION FILED MAY 14. 1910.

Patented Feb. 13,1912.

3 SHEBTS-SHBET 3.

Witnesses Attornys UNITED STATES PATENT OFFICE.

ERNEST EGGERS, OF NEW YORK, N. Y., ASSIGNOR TO COLORADO-YULE MARBLE(30., OF NEW YORK, N. Y.

STONE-SAWING MACHINE.

Specification of Letters Patent.

Patented Feb. 13, 1912.

To all whom, it may concern:

Be it known that I, ERNEST Econxs, a subject of the Emperor of Germany,residing at New York, in the county of New York and State of New York,have invented a new and useful StoneSawing Machine, of which thefollowing is a specification.

This invention has reference to improvements in stone sawing machines,the object being to provide a machine wherein the cutting tool is anendless wire strand or cable cooperating with an abrasive to cut intothe stone. v

In accordance with the present invention the stone may be cut intoblocks or slabs, or cylinders or in arcs of large diameters, or othershapes which may be desired.

The invention will be best understood from a consideration of thefollowing detail description taken in connection with the accompanyingdrawings forming a part of this specification, in which drawings Figure1 is an elevation partly broken away of a stone sawing machine embodyingthe present invention. Fig. 2 is an end elevation of the tension end ofthe machine also partly broken away. Fig. 3 is an elevation on a largerscale than Fig. 1 of a port-ion of the feeding means. Fig. 4 is a planview of the structure shown in Fig. 3 with some parts omitted. Fig. 5 isan elevation of the end of the machine remote from that shown in Fig. 2.Fig. 6 is a detail view partly in section and partly diagrammaticshowing the means for removing the abrasive and removed stone particlesfrom the cable or cutting strand. Fig. 7 is a diagrammatic viewillustrating an arrangement of the machine for cutting cylinders inwhole or in part. Fig. 8 is an end view of the power end of the stonesupporting structure of Fig. 7. Fig. 9 is an enlarged section through aportion of the frame and showing the journal box mounted for slidingmovement in the guides, the adjusting screw being shown in section. Fig.10 is a back view of the frame and showing the screw and a. portion ofthe journal box.

Referring to the drawings and more particularly to Figs. 1, 2, 3, 4, and5, there is shown in Fig. 1 two spaced supports 1, 2, respectively,which are assumed to be erected at one end of the machine.

One of the supports, say the support 2, carries a drum 3 around which isassumed to be wound an appropriate length of a cable 4 either made of asingle strand or a number of strands twisted together into the form of acable, but the term cable will be hereinafter used to designate thecutting strand whether made of one or more individual strands.

Mounted on the support 1 is another drum 5 of appropriate size and thecable 4 is carried back and forth between these drums an appropriatenumber of times. Power may be applied to either one of these drums todrive the cable, or it may be applied at any other point.

In Fig. 1 a drive pulley 5 has been shown upon the shaft of drum 5.

From one end of the drum 3 the cable 4 passes to an idler pulley 6 andthence across the frame 2 to another idler pulley 7 and from the latteraround another pulley 8 mounted in a structure best shown in Figs. 8 and4 to which reference will presently be made.

From the pulley 8 the cable extends to another pulley 9 in linetherewith, and by a structure similar to that carrying the pulley 8,this last named structure being supported in a frame 10 spaced anappropriate distance from the frame 2.

From the pulley 9 the cable extends around an idler pulley 11 mounted ona carriage 12 provided with wheels 13 adapted to tracks 14 on the frame10, these tracks extending in the direction of the run of the cablebetween the pulleys 8 and 9.

The carriage 12 has a rope or chain 15 attached thereto, this ropeextending over a pulley 16 and carrying at the other end a weight 17tending at all times to keep the carriage 12 at one end of the track 14.

The cable 4 extends from the idler 11 back to the frame 2 where itpasses over another idler 18 and from thence to the drum 5 and then backand forth between the drums 5 and 3 as before stated.

The direction of movement of the cable 4 is from the pulley 9 toward thepulley 8 and consequently the outgoing run of the cable is from theidler 18 to the idler 11 and thence returning by way of the pulley 9 tothe pulley 8 and ultimately back to the roller 3. The run of the cablebetween the pulleys 9 and 8 is the active run of the cable and thisportion of the cable is designed to act upon a block of stone mountedupon a produced by the cable is perpendicular to the surface of thetable 19 and rectangular slabs or blocks are readily cut by thestructure of Fig. 1.

The arrangement shown in Figs. 7 and 8 is adapted for cutting blocks ofstone into cylindrical shape or producing arc shaped portions describedabout the longitudinal axis of the block. For this purpose a head stockand a tail stock 56 is mounted on the table 19 or upon any othersuitable support between the frames 2 and 10.

The head stock 55 is provided with a spindle 56 provided with a wormwheel 57 engaged by a worm 58 on a shaft 59 carrying a pulley 60 drivenby a belt 61 coming from another pulley 62 on a shaft 63, receivingpower from any suitable source, and this shaft may receive power similarto the shaft 37 for feeding the cable to the work.

Considering the block 25 as mounted between the spindles of the head andtail stocks 55 and 56 then the cable imay be caused to enter the blockradially for the desired distance so that the distance from the axis ofthe head and tail stocks to the point of entrance of the cable into theblock determines the radius of the contemplated cylinder. Now by holdingthe cable against movement except in the direction of its length betweenthe pulleys or sheaves 9 and S and by slowly rotating the block 25 at aspeed agreeable to the speed of the cable through the stone, there isproduced a circular out about the axis of rotation of the stone and ifthe stone be carried through a complete rotation then the resultantproduct is a cylinder.

As each of the guide pulleys 8 and 9 drive a friction disk 51 adjustablyengaged by a disk 50, it will be seen that, by separately moving thesedisks 50 along the faces of the disks 51, the disk 39 and the adjustingscrews 31 can be driven in either of two directions separately orsimultaneously and at the same or different speeds so as to shift thepulleys 8 and 9 respectively and the active portion of the cableextended between said pulleys.

What is claimed is 1. In a stone cutting machine, an endless cuttingcable, guides therefor, yielding means for holding the cable normallytaut, said cable having its active portion held straight between two ofthe guides, and independently operable means actuated by the cable forshifting said last mentioned guides toward the work.

2. In a stone cutting machine, an endless cutting cable, revolubleguides therefor and operated thereby, the active portion of the cablebeing interposed between two of the guides, means for yieldingly holdingthe cable taut, and means operated by the last mentioned guides whenrotated by the cable, for feeding the active portion of the cable ineither of two directions and for moving said last mentioned guidedevices at the same or at different speeds.

3. In a stone cutting machine, the combination with a cutting cable andmeans for driving the same, and yielding means for holding the cabletaut during the movement thereof, of guide pulleys engaged and rotatedby the cable, the active portion of the cable being interposed betweenthe pulleys, and separately operating means actuated by the respectivepulleys for feeding said pulleys in either of two directions separatelyor simultaneously at the same or different speeds, to shift the activeportion of the cable therewith.

4. In a stone cutting machine, an endless cable, means for driving thesame, said cable constituting cutting means, guide pulleys engaged andactuated by the cable, the active portion of the cable being interposedbetween the pulleys, yielding means for holding the cable taut under allconditions, a slidable frame carrying each of the pulleys, said framesbeing separately movable, separately operable feed mechanism connectedto each frame, friction gearing for transmitting motion from each pulleyto the feed mechanism of the frame on which the pulley is mounted, meansfor shifting said mechanism to vary the speed or reverse the movement ofthe feed mechanism to raise or lower the frames and the pulleys thereontogether with the active portion of the cable mounted on and between thepulleys.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

. ERNEST EGGERS.

Witnesses:

J. F. PARRISH, GEO. B. TAYLOR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

